<table id="myTable" border="1"> <tbody><tr> <td>Row1 cell1</td> <td>Row1 cell2</td> </tr> <tr> <td>Row2 cell1</td> <td>Row2 cell2</td> </tr> <tr> <td>Row3 cell1</td> <td>Row3 cell2</td> </tr> </tbody></table> <br> <input type="button" onclick="rowRules()" value="Show only row borders"> <input type="button" onclick="colRules()" value="Show only col borders">